Debbie Martin-Law Centillium Communications, Inc. (510) 771-3595 [email protected]

CENTILLIUM'S EXTREMEDSLMAX TECHNOLOGY PUSHES ADSL RATES UP TO 50 MBPS AND EXTENDS REACH TO SERVE MORE CUSTOMERS

eXtremeDSLMAX Enables Service Providers to Roll Out Exciting New Services to Consumers, Significantly Increasing Average Revenue Per User

FREMONT, Calif., March 24, 2003 -

Centillium Communications, Inc. (Nasdaq:CTLM - News), innovator of broadband technology, unleashes its revolutionary eXtremeDSLMAX technology that will redefine the broadband access market for multimedia services by delivering up to 50 Megabits per second (Mbps) in downstream and 3 Mbps in upstream data rates using existing ADSL copper network infrastructure.

Centillium's eXtremeDSLMAX(TM) technology enhances capabilities and increases performance of ADSL for residential markets, accelerating the introduction of new premium services such as High Definition Television (HDTV), Video on Demand (VoD), Voice over Packet (VoP), and video and audio streaming for consumers. eXtremeDSLMAX can reach far more customers by extending the reach of ADSL services to ranges up to 22,000 feet (7,000 meters).

eXtremeDSLMAX technology is backward compatible to ADSL, ADSL2 and ADSL2plus allowing service providers to utilize existing ADSL infrastructure. The technology is intelligently designed to allow an expansion of ADSL and ADSL2 service area coverage, enabling service providers to increase revenue by expanding their subscriber base.

"Service providers have been seeking innovative ways to provide premium services to existing customers while expanding their coverage areas," said Todd DeBonis, Vice President of Worldwide Sales and Marketing for Centillium Communications. "Centillium's technology team has been working on solving this problem for a long time. The eXtremeDSLMAX technology, meets the increasing demands of service providers to bring a richer broadband experience to more users. In addition to recently approved ADSL standards, we have embedded eXtremeDSLMAX technology in our next generation chipsets that we will be announcing soon."

Centillium's eXtremeDSLMAX technology is based on a combination of hardware silicon design, mixed signal design, and advanced software algorithms that support the latest ADSL standards such as G.992.3 (G.dmt.bis).

About eXtremeDSLMAX Technology

Centillium's eXtremeDSLMAX technology is a revolutionary feature set, which optimizes the use of the ADSL spectrum to make significant improvements in the downstream and upstream bit rates and extending the reach of ADSL service while maintaining backward compatibility with ADSL, ADSL2, and ADSL2plus standards.

eXtremeDSLMAX consists of several key features. eXtremeDSLMAX Quad-Spectrum (MAX-QS) and eXtremeDSLMAX Double-Spectrum (MAX-DS) offer increased downstream rates that go beyond the traditional 8 Mbps up to 50 Mbps and up to 24 Mbps, respectively, without introducing any adverse impact to the existing services. The eXtremeDSLMAX Long-Reach (MAX-LR) feature allows service providers to increase their ADSL coverage up to 22,000 feet (7,000 meters). The eXtremeDSLMAX Extended-Upstream (MAX-US) feature increases upstream rates to up to 3 Mbps. The eXtremeDSLMAX High Bit-Loading (MAX-HBL) feature allows more than 15 bits to be loaded per each ADSL DMT subcarrier.

About Centillium Communications
Centillium Communications, Inc. combines technical innovation and customer commitment to make broadband communications – in business and at home – a practical reality. The Company designs and markets communications chipsets for Digital Subscriber Line (DSL) central office and customer premises equipment and for carrier- and enterprise-class Voice over Packet (VoP) gateways and switches. The Centillium Communications headquarters are located at 47211 Lakeview Blvd., Fremont, CA 94538. Additional information is available at www.centillium.com.

Forward Looking Statements
Except for historical information contained in this press release, the foregoing contains forward-looking statements that involve risks and uncertainties. Actual results may differ materially from those indicated by such forward-looking statements based on a variety of risks and uncertainties, including the risks and uncertainties relating to actual quantities and timing of any orders received under any contract and the successful development and market acceptance of Centillium's new products. The company assumes no obligation to update these forward-looking statements to reflect events or circumstances after the date hereof. Information about potential factors that could affect Centillium's financial results is included in Centillium's Annual Report on Form 10-K and most recent Quarterly Report on Form 10-Q, which can be viewed at the Securities and Exchange Commission’s website at www.sec.gov.

Centillium Communications and the Centillium logo are trademarks of Centillium Communications.

Copyright 2003 Centillium Communications, Inc. All rights reserved. All other products or service names mentioned herein are the property of their respective owners.